How to make Pulse Oximeter at Home

In our previous blog, we interfaced Pulse-Oximeter (Max30100) Module to NodeMCU. With a little bit of modification that can be upgraded to a full functioning Pulse-Oximeter. We have interfaced 0.96" I2C OLED display before. Today we made a Pulse-Oximeter using that knowledge.

Follow our previous blogs for a better understanding of the scenario.
Pulse Oximeter MAX30100 Interface with NodeMCU
OLED Display Interface with Arduino

Things we need:

• NodeMCU
• Max30100 Module
• 0.96" OLED I2C Display Module 
• Female Berg Strip Connector
• Dot Vero Board
• Soldering Kit
• Nut and Bolts 1/8"
• PVC Spacer Tube

Connection Diagram:
Now follow the diagram below to do the connections.

After the connection is done upload the code below.

Source Code:

Video:
Watch the video for a better understanding.

Reference:

[1] Sarkar, S., Ghosh, A., Chakraborty, M., & Mondal, A. (2024). Design, Hardware Implementation of a Domestic Pulse Oximeter Using IOT for COVID – 19 Patient. International Journal of Microsystems and Iot, 2(1), 469–475. https://doi.org/10.5281/zenodo.10629635